<template>
  <div class="login">
    <div>
      <el-form
        v-loading="loading"
        element-loading-text="正在登录..."
        element-loading-spinner="el-icon-loading"
        element-loading-background="rgba(0, 0, 0, 0.8)"
        :rules="rules"
        ref="loginForm"
        :model="loginForm"
        class="loginContainer"
      >
        <h3 class="loginTitle">欢迎登录校园运动健康平台</h3>

        <el-form-item prop="username">
          <el-input
            type="text"
            auto-complete="false"
            v-model="loginForm.username"
            placeholder="请输入用户名"
          ></el-input>
        </el-form-item>

        <el-form-item prop="password">
          <el-input
            type="password"
            auto-complete="false"
            v-model="loginForm.password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>

        <el-form-item prop="code">
          <el-input
            size="normal"
            type="text"
            auto-complete="false"
            v-model="loginForm.code"
            placeholder="点击图片更换验证码"
            style="width: 250px; margin-right: 5px"
          ></el-input>
          <img :src="captchaUrl" @click="updateCaptcha" />
        </el-form-item>

        <el-button type="primary" style="width: 100%" @click="submitLogin" @keyup.enter="submitLogin"
          >登录</el-button
        >
      </el-form>
    </div>
    <vue-particles
      color="#fff"
      :particleOpacity="0.7"
      :particlesNumber="60"
      shapeType="circle"
      :particleSize="4"
      linesColor="#fff"
      :linesWidth="1"
      :lineLinked="true"
      :lineOpacity="0.4"
      :linesDistance="150"
      :moveSpeed="2"
      :hoverEffect="true"
      hoverMode="grab"
      :clickEffect="true"
      clickMode="push"
      class="lizi"
      style="height: 100%"
    ></vue-particles>
  </div>
</template>


<script>
export default {
  name: "Login",
  data() {
    return {
      captchaUrl: "/captcha?time=" + new Date(),
      loginForm: {
        username: "",
        password: "",
        code: "",
      },
      loading: false,
      checked: true,
      rules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
        ],
        password: [{ required: true, message: "请输入密码", trigger: "blur" }],
        code: [{ required: true, message: "请输入验证码", trigger: "blur" }],
      },
    };
  },
  methods: {
    updateCaptcha() {
      this.captchaUrl = "/captcha?time=" + new Date();
    },
    submitLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          this.postRequest("/login", this.loginForm).then((resp) => {
            if (resp) {
              this.loading = false;
              //存储用户token
              const tokenStr = resp.obj.tokenHead + resp.obj.token;
              window.sessionStorage.setItem("tokenStr", tokenStr);
              //跳转首页
              this.$router.replace("/Carousel");
            } else {
              this.loading = false;
              this.updateCaptcha();
            }
          });
        } else {
          this.$message.error("请输入全部信息！");
          return false;
        }
      });
    },
  },
};
</script>


<style>
.login {
  background-image: linear-gradient(-170deg, #1a1454 1%, #0e81a5 33%);
  background-repeat: no-repeat;
  background-size: cover;
  height: auto;
}

.loginContainer {
  border-radius: 15px;
  background-clip: padding-box;
  margin: 0px auto;
  transform: translateY(50%);
  width: 358px;
  padding: 15px 35px 15px 35px;
  background: #5655ff;
  border: 1px solid #a922d3;
  box-shadow: 0 0 25px #1a2db7;
}

.loginTitle {
  margin: 0px auto 40px auto;
  text-align: center;
  color: rgb(193, 219, 210);
}

.loginRemember {
  text-align: left;
  margin: 0px 0px 15px 0px;
}

.el-form-item__content {
  display: flex;
  align-items: center;
}
</style>